It's the most likely the placenta which provides nutrients to the guinea pig pups while they're in their mother's womb.
don't keep them in the same cage if they have not been spayed or neutered unless you want babies.
Bloody Fist Records ended in 2004.
My Bloody Valentine - band - ended in 1997.
Air Guinea ended in 2005.
French Guinea ended in 1958.
Spanish Guinea ended in 1968, when it became Equatorial Guinea.
Netherlands New Guinea ended in 1962.
Territory of New Guinea ended in 1949.
Guinea-Bissau peso ended in 1997.
German New Guinea ended in 1919.
Guinea Company of Scotland ended in 1639.
Socialist Democracy of Guinea ended in 1958.